Create a test case/document to test the following Java program.

import javax.swing.JOptionPane;

public class LoanCalculator {

public static void main(String[] args) {

double loan = Double.parseDouble(JOptionPane.showInputDialog(null, “Input loan amount: “));

double apr = Double.parseDouble(JOptionPane.showInputDialog(null, “Input interest rate: “));

double num = Double.parseDouble(JOptionPane.showInputDialog(null, “Input number of payments: “));

double payment =

loan * (apr/1200.0) * Math.pow((1.0 + apr/1200.0), num) / (Math.pow((1.0 + apr/1200.0), num) – 1.0);

String message = String.format(“Your total is: $%,.2f”, payment);

JOptionPane.showMessageDialog(null, message);


} // LoanCalculator

When run, this program generates the following 4 screens/windows.

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